DAPS

Improving Diffusion Inverse Problem Solving with Decoupled Noise Annealing

Bingliang Zhang et al. · CVPR 2025 Oral

Read paper · arXiv:2407.01521

Decouple measurement-consistency updates in clean space from renoising.

What you will implement

Linear-Gaussian posterior score, Langevin updates, and independent renoising.

• 48. DAPS Decoupled Posterior Sampling

  Use a measurement-conditioned score for Langevin updates, then independently re-noise the clean sample.

  Implement DAPS Eq. (7) for a linear observation and the re-noising kernel. ODE estimates, noises and the loop are supplied; no diffusion network training.